SE1950787A1 - A differential serial bus wiring harness, and a vehicle - Google Patents
A differential serial bus wiring harness, and a vehicleInfo
- Publication number
- SE1950787A1 SE1950787A1 SE1950787A SE1950787A SE1950787A1 SE 1950787 A1 SE1950787 A1 SE 1950787A1 SE 1950787 A SE1950787 A SE 1950787A SE 1950787 A SE1950787 A SE 1950787A SE 1950787 A1 SE1950787 A1 SE 1950787A1
- Authority
- SE
- Sweden
- Prior art keywords
- serial bus
- wiring harness
- signal line
- distributor
- termination
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/0207—Wire harnesses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dc Digital Transmission (AREA)
Abstract
A wiring harness (200) for a differential serial bus, comprising: a high signal line (202), a low signal line (203), wherein the wiring harness is configured to be connected to: a controller (101) having a serial bus interface with a termination, at least one device (102,103,104) having a serial interface, a serial bus termination (201) for termination of the differential serial bus in its end, wherein the high and low signal lines of the wiring harness are configured to be connected between the controller and the serial bus termination, the high signal line comprises a first distributor (204) configured to be connected to the high signal line of the at least one device (102,103,104), the low signal line comprises a second distributor (205) configured to be connected to the low signal line of the at least one device (102,103,104), and the first distributor and the second distributor have a predetermined maximum distance (d) to the at least one device.
Description
A differential serial bus wiring harness, and a vehicle TECHNICAL FIELD The present invention relates to a wiring harness for a differential serial bus,comprising a high signal line, a low signal line, wherein the wiring harness isconfigured to be connected to a controller having a serial bus interface with atermination, at least one device having a serial interface, and a serial bus termination for termination of the differential serial bus in its end.
The invention also relates to a vehicle, comprising a controller having a serialinterface, at least one device having a serial interface, a serial bus termination for termination of the differential serial bus in its end.
BACKGROUND A modern vehicle is usually equipped with different subsystems connected to acommunication bus. This communication bus is often a serial bus and in order toincrease the signal-to-noise ratio the bus is often a differential serial bus such asa CAN bus. Such serial buses often requires termination in each end of the bus,for example in form of 120 ohm resistors. This is illustrated in the Fig. 1 whichillustrates a prior-art solution. This serial bus is in a first end connected to acontroller, often called a coordinator, having a built-in termination. ln the secondend of the bus a junction block is connected. This junction block is provided fortermination and connection to other subsystems by means of connectors. Thismeans that the cables connecting the subsystems to the junction block may be ofconsiderable length. For example if a front break system shares the serial buswith a rear break system. This may cause problems related to EMC. Furthermore,the juction block may require brackets for fastening to a chassie of a vehicle andspace to insert the connectors into the junction block. This may lead to unfavourable routing of the wiring harness.
SUMMARY OF THE INVENTION lt is an object of the present invention to present a new favourable solution to the problem described above.
The object of the invention is achieved by means of wiring harness for differentialserial bus as defined hereinabove and in the preamble of claim 1, which wiringharness is characterized in that the high and low signal lines of the wiring harnessare configured to be connected between the controller and the serial bustermination, the high signal line comprises a first distributor configured to beconnected to the high signal line of the at least one device, the low signal linecomprises a second distributor configured to be connected to the low signal lineof the at least one device, and the first distributor and the second distributor have a predetermined maximum distance to the at least one device.
According to one embodiment, the predetermined maximum distance is 3 meter.
This provides an efficient El\/IC protection for the wiring harness.
According to one embodiment, the first distributor and the second distributor areultrasonic splices. This provides distributors that are easily integrated in the wiring harness, and the fastening brackets for the connectors may be omitted.
According to one embodiment, the differential serial bus is a Controller AreaNetwork (CAN) bus.
The invention also relates to a vehicle, comprising a controller having a serial businterface, at least one device having a serial interface, a serial bus termination fortermination of the differential serial bus in its end. The vehicle being characterizedin that, routed between the controller, the at least one device, and the serial bustermination, the vehicle comprises a wiring harness according to the present invention.
This allows a robust implementation of a wiring harness for a vehicle thatprovides good resistance to El\/IC related problems. Furthermore, the wiringharness allows a more optimal routing for subsystems. The wiring harnessaccording to the present invention allows the first and second distributor to beplaced anywhere, along the high signal line and the low signal line, between the controller and the termination which is advantageous.
LIST OF DRAWINGS An embodiment of the present invention will now be described more in detail, by way of example, with reference to the drawing, on which:Fig. 1 is a schematic illustration of prior-art solutions.
Fig. 2 is a schematic illustration of a wiring harness according to the invention.
DETAILED DESCRIPTION OF EIVIBODINIENTS Fig. 2 is a schematic illustration of wiring harness according to the presentinvention. Preferably the wiring harness is arranged in a vehicle, such as a bustruck, for the purpose of communication between different subsystems of the vehicle. ln FIG. 2 a controller, generally designated 101, is shown. The controller 101comprises a serial bus interface with a termination shown symbolically as aresistor. To the serial bus interface of the controller a wiring harness, generallydesignated 200, is connected. The wiring harness comprises a high signal line202 and a low signal line 203. The high signal line and the low signal line areused for differential serial communication. The wiring harness comprises a serialbus termination 201 for termination of the differential serial bus in its end. Thisserial bus termination 201 may be integrated into the wiring harness. The highand low signal lines of the wiring harness are configured to be connected between the controller and the serial bus termination. 4 Furthermore, in FIG. 2 at least one device 102, 103, 104 is schematically drawn.The at least one device may for example be a breaking subsystem. The at leastone device 100, 103, 104 have a serial interface configured to be connected to the wiring harness.
The high signal line comprises a first distributor 204 connected to the high signalline of the at least one device 102, 103, 104. The first distributor may for examplebe a soldered wire, or a pressed contact with a wire. Furthermore, the low signalline comprises a second distributor 205 configured to be connected to the lowsignal line of the at least one device. ln a preferred embodiment the firstdistributor and the second distributor are ultrasonic splices isolated with forexample a shrink tube. ln this way the distributors are integrally formed in thewiring harness and requires no extra brackets for fastening. The ultrasonic spliceis especially preferred since the splice is formed at low temperatures which isgood for the wiring harness, that often uses plastic materials. Furthermore, thesplice allows the twisting of the high signal line and the low signal line to be uninterupted, which is good for El\/IC immunity. ln order to provide good resistance against El\/IC disturbance there is apredetermined maximum distance, d, between the at least one device and thefirst and second distributor. ln one embodiment the predetermined maximum distance is 3 m.
This wiring harness provides a large degree of freedom for the placement of thefirst and second distributor within the wiring harness, since no fastening bracketsare required. The position of the first and second distributor may be selected suchthat the distance to the at least one device is minimized, which is preferred fromEl\/IC point of view. ln one embodiment the differential serial bus is a controller area network (CAN) bus.
The wiring harness 200 is especially useful for connection of different devices toa controller within a vehicle, due to the flexibility and resistance against El\/IC disturbances.
Claims (5)
1. A wiring harness (200) for a differential serial bus, comprising: a high signal line (202); a low signal line (203); wherein the wiring harness is configured to be connected to: a controller (101) having a serial bus interface with a termination;at least one device (102,103,104) having a serial interface; a serial bus termination (201) for termination of the differential serial bus in its end; characterized in that: the high and low signal lines of the wiring harness are configuredto be connected between the controller and the serial bustermination; the high signal line comprises a first distributor (204) configuredto be connected to the high signal line of the at least one device(102,103,104); the low signal line comprises a second distributor (205)configured to be connected to the low signal line of the at leastone device (102,103,104); and the first distributor and the second distributor have a predetermined maximum distance (d) to the at least one device.
2. A wiring harness for a differential serial bus according to claim 1, characterized in that the predetermined maximum distance is 3 meters.
3. A wiring harness for a differential serial bus according to any preceding claim, characterized in that the first distributor and the second distributor are ultrasonic splices. 5 7
4. A wiring harness for a differential serial bus according to any preceding claim,characterized in that the differential serial bus is a Controller Area Network(CAN) bus.
5. A vehicle (100), comprising: a controller (101) having a serial bus interface; at least one device (102,103,104) having a serial interface; a serial bus termination (201) for termination of the differential serial busin its end; characterized in that, routed between the controller, the at least onedevice, and the serial bus termination, the vehicle comprises a wiring harness (200) according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1950787A SE1950787A1 (en) | 2019-06-26 | 2019-06-26 | A differential serial bus wiring harness, and a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1950787A SE1950787A1 (en) | 2019-06-26 | 2019-06-26 | A differential serial bus wiring harness, and a vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE1950787A1 true SE1950787A1 (en) | 2020-12-27 |
Family
ID=74181465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1950787A SE1950787A1 (en) | 2019-06-26 | 2019-06-26 | A differential serial bus wiring harness, and a vehicle |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE1950787A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090004927A1 (en) * | 2007-06-29 | 2009-01-01 | Mincek Mark F | Wiring Harness with Integrated Two-Way In-Line Connection Capability |
| US20150349471A1 (en) * | 2014-05-30 | 2015-12-03 | Yazaki Corporation | Vehicle harness structure and additional connection member |
| US20150360627A1 (en) * | 2014-06-17 | 2015-12-17 | Yazaki Corporation | Wire harness |
| CN106240374A (en) * | 2016-08-17 | 2016-12-21 | 厦门金龙旅行车有限公司 | The safety management system of a kind of new-energy automobile and method |
| CN108162895A (en) * | 2017-12-29 | 2018-06-15 | 深圳市沃特玛电池有限公司 | The electric-controlled parts on-line monitoring system and method for a kind of pure electric automobile |
-
2019
- 2019-06-26 SE SE1950787A patent/SE1950787A1/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090004927A1 (en) * | 2007-06-29 | 2009-01-01 | Mincek Mark F | Wiring Harness with Integrated Two-Way In-Line Connection Capability |
| US20150349471A1 (en) * | 2014-05-30 | 2015-12-03 | Yazaki Corporation | Vehicle harness structure and additional connection member |
| US20150360627A1 (en) * | 2014-06-17 | 2015-12-17 | Yazaki Corporation | Wire harness |
| CN106240374A (en) * | 2016-08-17 | 2016-12-21 | 厦门金龙旅行车有限公司 | The safety management system of a kind of new-energy automobile and method |
| CN108162895A (en) * | 2017-12-29 | 2018-06-15 | 深圳市沃特玛电池有限公司 | The electric-controlled parts on-line monitoring system and method for a kind of pure electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |